I have not tried that ever on purpose. But my pdoc told me they used to keep patients awake all night to treat bp depression a long time ago and that it really worked. Pretty interesting. When I'm in the dark depression I would need someone's help keeping me awake to try that, because I can just sleep and sleep and sleep. I get very melancholy late summer too...to me, it makes sense. I don't see why everyone isn't affected as such really.